Homepage: http://www.emacswiki.org/cgi-bin/wiki/download/usage-memo.el
Author: rubikitch
Updated:
Integration of Emacs help system and memo
This program enables you to write annotation in *Help* and third-party help systems. When we do programming, we often use Emacs help system (ie. describe-function). Do you want to take a note in the *Help* buffer and want Emacs to show your note later? In other words, integration of Emacs help and your memo!